Air and gas mixer.



F. W. GAULT, JR. AIR AND GAS MIXER.

APPLICATION FILED JAN. 17. 1918.

1,286,582. Patented Dec. 3, 1918.

2 SHEETS-SHEET E v )6 ATTORNEY F. W. GAULT, JR.

AIR AND GAS MIXER.

' APPL 913. 1,286,582. Patented Dec. 3, 1918.

I 2 SHE EE 2.

ETS-SH T FRANK W. GAULT, JR., OF OKOLONA, KENTUCKY.

AIR AND GAS MIXER.

Specification of Letters Patent.

Patented Dec. 3, 1918.

Application filed January 17, 1918. Serial No. 212,195.

To all whom it may concern:

Be it known that I, FRANK W. GAULT, J r.,

a citizen of the United States, residing at Okolona, in the county of Jefl'erson and State of Kentucky, have invented certain new and useful Improvements in Air and Gas Mixers, of which the following is a specification.

This invention relates to a devlce adapted to mix air and fluid hydrocarbons previous to delivery of same to a burner for consumption.

A suitable mixture of air (oxygen) and gas (hydrocarbon) may be burnt progressively and complete combustion attained 111 a closed chamber without the admlsslon thereto of atmospheric air.

By so burning air and gas in a closed chamber under a heat absorbin medium a maximum utilization of the B. U. in the gas may be obtained.

An object of this inventlon is the provision of means whereby air and fluid hydrocarbons may be thoroughly mixed and whereby the quantities of the ingredients entering into the mixture may readily be regulated.

With the foregoing and other ob]ects in view, the invention consists of the novel construction and arrangement of parts illustrated in the accompanyingdrawings, comprising two sheets, which form a part of this specification, wherein is set forth an embodiment of the invention, but it is to be understood that such changes and modifications may be resorted to as come within the scope of the appended claims.

In the drawings, wherein similar reference characters designate like parts in the several views, Figure l, is a top plan view of an embodiment of the invention: Fig. 2,

a rear elevation with connections removed: Fig. 3, an end elevation: Fig. 4, a transverse section on line 4-4 of Fig. 2, with parts omitted; Fig. 5, a section on line 55 of Fig. 2, with parts of the induction tube broken away and the tube leading to the burner omitted: Fig. 6, a longitudinal section on line 66 of Fig. 3, some parts being omitted to give a clearer understanding of the construction: Fig. 7, a section on line 77 of Fig. 6: Fig. 8, a vertical central longitudinal section of a modified form: 9, a section on line 99 of Fig. 8.

The embodiment of the invention illustrated herewith comprises a substantially rectangular body, or block -lprovided with a longitudinal mixing chamber 2-, formed by boring, and counter boring from each end the block in such a manner as to leave an internal annular shoulder 3-, againstwhich a foraminous diaphragm may be placed. The ends of this chamber are closed by suitable means such as screw plugs A centrally positioned opening 6, extended in from the rear of the block to a connection with the mixing chamber is provided with suitable means, such screw threads 7 whereby an induction nozzle -8 may be adjustably positioned therein, a lock nut 9 serving to secure it in adjusted position. An opening 10 on the opposite side of the block from, and in axial alinement with the openings (3, is provided with suitable means, such as screw threads 11 permitting of the securing therein of a conduit -l2 which leads to a burner. Openings 13 positioned respectively on each side of the opening 6 lead from theexterior into the mixing chamber. Suitable means are provided for regulating the admission of air through these openings into the mixing chamber, at atmospheric pressure. As illustrated herewith, said means comprise plates l4 which fit close against the block and are pivotally secured thereto by suitable means as screws 15. The bodies of these plates are of such size that when in a closed position they completely cover the openings 13. The frictional cont-act of the plates with the block is such that they will remain in any position to which moved. Extensions 16- serve as handles by means of which the plates may be shifted. The openings 13 are provided with screw threads 17- permittin of the attachment'of pipes wlnch may be extended exterior of the apartment in which the mixer is located, for the purpose of procuring air with a larger oxygen content. In such cases the platesll, would be dispensed with and a valve would be interposed in the continuity of the pipe to control the admission of air. The openings 13 are of the same size as the mixing chamber, so that if desired the plugs 5 may be placed in them and the valves 14 placed over the ends of the mixing chamber (Fig. 8). A gas chamber 20 arranged near each end of the block extends transversely therethrough, in a plane parallel with, but spaced from the mixing chamber.

The gas chamber communicates with the mixing chamber by -21-. ()penings 22 through the .walls of the gas chamber provide means wherebyaccess may be had to the interior thereof for the purpose of drilling the passages 21, or for reaming them out,-if too small. The ends of the gas chambers are provided with suitable means, such as screw threads 23 whereby one end may be closed by suitable closures-Such as plugs -24 and for the connection therewith at the other ends of pipes 25, which by suitable connections, such as unions -27-, and a T -28- may be connected with gas supply pipe -29--. A conduit -30 attached to the nozzle 8 leads from suitable means (not shown) adapted to supply air under pressure. In the modification shown in Fig. 8, a gas chamber is arranged longitudinally of the block and communicates with the mixing chamber by means of passages -l1-. Suitable means are provided for controlling the flow through the passages, such as conically pointed plugs 42-, or needle valves -43- which are positioned in I a threaded opening ---44:. The ends of the the ends ofthe gas chamber gas chamber 40, are closed by plugs -45-. Gas is supplied to the chamber by means of a valved pipe -46- connected in a threaded opening -47-. The. opening 47-- and are adapted to receive either the supply pipe or the plugs, so that the attachment may e made as suits the exigencies of the case. A conduit -3l tapped in an opening -32-- through a wall ofthe mixing chamber leads from a suitable source of supply (not shown) and is provided with suitable means such as a valve -33 whereby liquid hydrocarbons from said source may be admitted in desired quantities to the mixing chamber. The mixer as described is located in proximity to the chamber within which the burner is positioned. In operation, gas is first admitted to the gas'chamber, mains, under normal pressure, 0 five or six ounces. Air under suitable pressure, which may vary according to conditions connected with the installation, is then admitted into the mixing chamber which it enters .with great velocity, creating a partial vacuum therein and drawing in gas. The gas is then lighted at the burner. Free gas in suitable volume is then admitted into the mixing chamber, by manipulating the valves 14:. Greater heat may be obtained by introducing a liquid hydrocarbon, such as gasolene into the mixing chamber, through the conduit 31, adding it to the air and gas. Pas sage of air and gas through a foraminous partition 35- serves to give a more thorough mixture of the gas and air molecules. By means of this improved mixer, air and gas may be delivered to the burner in such proportions and such pressure as to atmeans of passages usuall from city gain complete combustion in a closed cham- Having thus described my invention so that anyone skilled in the art pertaining thereto can make and use the same, I claim: 1. In a mixer as characterized, a body having a mixin chamber, and having a plurality of openings thereinto, an induction nozzle extending thereinto through one of said openings, an eduction tube leading from an opening opposite said nozzle, plugs closing certain of the openings, valves covering the other of the openings, a gas chamber lying in a plane parallel with the mixing chamber and having a passage connecting the two chambers, and having a plurality of openings from the exterior into said .gas chamber, a supply pipe fitted in one of said openings and closures fitted in the other of said openings.

2. In a gas burner as characterized, a body having a bore extending the full lengt thereof forming a mixing chamber and having a pair of openings through the walls of the chamber, plugs adapted to close either the end of said bore or said openings and valves adapted to be not so closed, an induction nozzle intersected through the wall of the-chamber, and an eduction tube leading from the chamber.

3. In a gas mixer as characterized, a body having a bore extending the full lengt thereof forming a mixing chamber and hav' ing a pair of openings through the walls of the chamber, plugs adapted to' close either the end of said bore or said openings, valves adapted to be positioned over those not so closed, an induction nozzle intersected through the wall of the chamber, an eduction tube leading from the chamber, the body having a second bore extendin through same forming a gas chamber, an having a passage connecting the two chambers, plugs closing the ends of the said bore, a supply pipe connected to the gas chamber, the wall of the gas chamber having a perforation opposite said passage and a conically point-- ed plug in said perforation adapted to control the flow of gas through the passage.

4. In a gas mixer as characterized, abody having a bore extending the full length thereof forming a mixing chamber, and having a pair of openings through the walls of the chamber, plugs adapted to close either the end of said bore or the openings, valves adapted to be positioned over those not sov positioned over those passage, and a valve adapted to control the flow of gas through the passage. v

5. In a mixer as characterized, a body having a mixing chamber, and having a plu rality of openings into said chamber from the exterior, an educ tion nozzle extending into the chamber, an eduction tube leading therefrom, fixed closures. for certain of said openings, valves controlling the other of the openings, a gas chamber communicating with the mixing chamber and having a plurality of openings from the exterior, a supply pipe fitted in one of said openings, and closures for the other of said openings;

6. In a mixer as characterized, a body' having a mixing chamber, and havinga plurality of openings thereinto, an induction nozzle extending thereinto through one of.

said openings, an eduction tube leading from an opening opposite. said nozzle, plugs closing certain of the openings, valves covering the other of the openings, a gas chamber lying in a plane parallel with the mixing chamber and having a passage connecting the two chambers and having a plurality of openings from the exterior into said gas chamber, a supply pipe fitted in one of said openings, a valve fitted'in another of the openings and controlling said passage, and.

closures fitted in the other of said openings.

1 FRANK W. GAULT, JR; 

